Electronic fuel injection throttle body assembly

Abstract

Present embodiments provide a throttle body which may be used with a variety of engines of different manufacturers. The throttle body may be used to replace mechanical or hydraulically controlled carburetors with electronic fuel injection. The throttle body may provide improved fuel pathways and fuel injector placement.

What is claimed is: 
     
       1. A throttle body assembly, comprising:
 a throttle body having an upper inlet and a lower outlet configured to mount to an internal combustion engine; 
 four bores each extending through said throttle body, wherein each of said four bores comprises said upper inlet and said lower outlet of said throttle body assembly; 
 a first fuel component cover located on a first side of said throttle body and associated with a first and second bores of said four bores 
 a second fuel component cover located on a second opposite side of said throttle body and associated with a third and fourth bores of said four bores; 
 a first fuel injector disposed at least partially within said throttle body corresponding to each of said four bores, wherein said first fuel injector extends horizontally into said throttle body; 
 at least one connecting fuel passage extending from a fuel inlet passage, comprising a cross-channel passageway and a vertical passageway at least partially disposed within each of said first fuel component cover and said second fuel component cover, wherein said vertical passageway is in fluid communication with said first fuel injector in fluid communication with each bore of said four bores corresponding to said first fuel component cover and said second fuel component cover; 
 said first fuel injector receiving fuel from said first fuel component cover or said second fuel component cover and directing fuel into a fuel distribution ring corresponding to each of four bores, each said fuel distribution ring having a plurality of fuel apertures directing fuel into one corresponding bore of said four bores of said throttle body; and, 
 a throttle shaft extending though the throttle body and one pair of said four bores, wherein said throttle shaft is perpendicular to a horizontal direction between a first end and a second end of each of said first fuel injectors, respectively. 
 
     
     
       2. The throttle body assembly of  claim 1 , further comprising a second fuel injector installed and associated with each bore of said four bores. 
     
     
       3. The throttle body assembly of  claim 2 , said vertical passageway also in fluid communication with said second fuel injector. 
     
     
       4. The throttle body assembly of  claim 2  wherein said second fuel injector is in fluid communication with a said fuel distribution ring or a second fuel distribution ring. 
     
     
       5. The throttle body assembly of  claim 1 , further comprising an electronic control unit. 
     
     
       6. A throttle body assembly, comprising:
 a throttle body having an upper inlet and a lower outlet configured to mount to an internal combustion engine; 
 a bore extending through said throttle body, wherein said bore comprises said upper inlet and said lower outlet; 
 a first fuel component cover located on a first side of said throttle body; 
 a first fuel injector disposed at least partially within said throttle body, wherein said first fuel injector is disposed horizontally within said throttle body; 
 at least one connecting fuel passage extending from a fuel inlet passage, comprising a cross-channel passageway and a vertical passageway at least partially disposed within said first fuel component cover and extending for fluid communication between said first fuel injector and a second fuel injector and wherein said vertical passageway is capable of fluid communication with the second fuel injector which is capable of being positioned at least partially within said throttle body relative to the same said bore as the first fuel injector; and, 
 a throttle shaft extending though the throttle body and said bore, wherein said throttle shaft is perpendicular to a horizontal direction between a first end and a second end of each of said at fuel injectors, respectively; 
 said first fuel injector and said second fuel injector each directing fuel into a respective channel of at least one fuel distribution ring, said at least one fuel distribution ring having a plurality of fuel apertures directing fuel into said bore of said throttle body. 
 
     
     
       7. The throttle body assembly of  claim 6  wherein each of said bore has said first fuel injector and said second fuel injector being vertically aligned fuel injectors. 
     
     
       8. The throttle body assembly of  claim 7 , further comprising a third fuel injector and a fourth fuel injector in fluid communication with a second bore. 
     
     
       9. The throttle body assembly of  claim 7 , said third fuel injector and said fourth fuel injector disposed within said first fuel component cover. 
     
     
       10. The throttle body assembly of  claim 6  wherein said bore comprises four bores. 
     
     
       11. The throttle body assembly of  claim 6  wherein said at least one connecting fuel passage is on a first side of said throttle body assembly. 
     
     
       12. The throttle body assembly of  claim 6 , further comprising a second fuel component cover on a side opposite said first fuel component cover. 
     
     
       13. The throttle body assembly of  claim 6 , further comprising an electronic control unit in electrical communication with said first fuel injector and said second fuel injector. 
     
     
       14. A throttle body assembly, comprising:
 a throttle body having an upper inlet and a lower outlet configured to mount to an internal combustion engine; 
 a plurality of bores each extending through said throttle body, wherein each of said plurality of bores comprises said upper inlet and said lower outlet of said throttle body assembly; 
 a first fuel component cover located on a first side of said throttle body and a second fuel component cover located opposite said first fuel component cover; 
 a first fuel injector disposed at least partially within said throttle body, wherein said first fuel injector extends horizontally into said throttle body; 
 at least one connecting fuel passage extending from a fuel inlet passage, comprising a cross-channel passageway and a vertical passageway at least partially disposed within each of said first fuel component cover and said second fuel component cover, wherein said vertical passageway is in fluid communication with said first fuel injector and a second fuel injector within each of said first fuel component cover and said second fuel component cover, both of said first fuel injector and said second fuel injector of the first fuel component cover providing fuel to a first bore of said plurality of bores, and wherein said vertical passageway is capable of feeding the second fuel injector which is capable of being positioned at least partially within said throttle body; and 
 said first fuel injector and said second fuel injector directing fuel into at least one fuel distribution ring, said at least one fuel distribution ring having a plurality of fuel apertures directing fuel into each of said plurality of bores of said throttle body. 
 
     
     
       15. The throttle body assembly of  claim 14 , further comprising an electronic control unit. 
     
     
       16. The throttle body assembly of  claim 14 , further comprising a third fuel injector and a fourth fuel injector disposed in said first fuel component cover and in fluid communication with a second bore of said plurality of bores. 
     
     
       17. The throttle body assembly of  claim 16 , further comprising a total of four fuel injectors within said second fuel component cover. 
     
     
       18. The throttle body assembly of  claim 17 , said four fuel injectors providing fuel to a third bore and a fourth bore of said plurality of bores.